A grand jury will hear the case against a former New Jersey Transit bus operator accused of masturbating behind the wheel while navigating a passenger-filled bus through the Lincoln Tunnel and busy streets.

At his arraignment in Hudson County Criminal Court Wednesday, 41-year-old George Simpson, Jr. did not speak. His attorney waived his client’s right to have formal charges read out loud.

“We don’t have any comment,” said defense attorney Frank Arleo. “We are waiting to get discovery from the prosecutor and then we will begin talking to them.”